1 Chronicles 24:2
But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest’s office. (1 Chronicles 24:2)
Nadab and Abihu died.
 They perished because of having offered “strange fire” before the Lord (Lev. 10:1, 2; Num. 3:4).